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Leep Talent Limited

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Full Stack Developer

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Summary

Onsite Full Stack Developer in Bloomsbury, Central London (£35k–£45k) building React front ends and .NET/C# and Node.js back ends, with AWS serverless (Lambda, API Gateway), SQL Server, and Salesforce/Celigo integrations for a global multimedia organisation's digital platforms.

Salary: £35,000 - 45,000 per year

Requirements:
  • Minimum 3 years of experience in a Full Stack Development role.
  • Strong understanding of software development principles and object-oriented programming.
  • Commercial experience with React, .NET, and C#.
  • Commercial experience with RESTful API development.
  • Commercial experience with AWS, including Lambda and API Gateway.
  • Commercial experience with SQL Server, including T-SQL, stored procedures, and views.
  • Commercial experience with HTML5, CSS, LESS, and SASS.
  • Commercial experience with JavaScript and jQuery.
  • Experience working with server-side MVC applications.
  • Understanding of responsive design, accessibility, and web performance best practices.
  • Experience developing HTML email templates.
  • Strong troubleshooting and problem-solving skills.
Responsibilities:
  • Develop and maintain React applications and user-facing digital platforms.
  • Build, support, and enhance APIs and backend services using .NET/C# and Node.js.
  • Work with AWS Lambda and API Gateway to support serverless application development.
  • Develop and maintain integrations between Salesforce and internal systems using Celigo.
  • Write, optimise, and troubleshoot SQL queries, stored procedures, and database processes.
  • Support Salesforce development using Apex and Aura Components.
  • Deliver responsive, accessible, and high-performing front-end experiences.
  • Implement designs from internal and external creative teams.
  • Create and maintain HTML email templates for both B2C and B2B communications.
  • Integrate third-party services and social media platforms via APIs.
  • Lead technical SEO implementation and optimisation initiatives.
  • Participate in Agile ceremonies, sprint planning, and collaborative development activities.
  • Improve the usability, accessibility, and performance of internal web-based applications.
Technologies:
  • Apex
  • API
  • AWS
  • Lambda
  • Backend
  • C#
  • Cloud
  • CSS
  • HTML5
  • Support
  • JavaScript
  • LESS
  • MVC
  • React
  • SASS
  • SQL
  • Salesforce
  • Serverless
  • Web
  • jQuery
  • ASP.NET
  • NodeJS
  • Fullstack

More:

We are a globally recognised multimedia organisation with a rich heritage and an exciting future. As we continue a significant programme of digital transformation, we are looking for a talented Full Stack Developer to help build and enhance the digital products, platforms, and integrations that power our global audience and internal operations. This is an excellent opportunity for a developer who enjoys working across the full technology stack and thrives in a collaborative, agile environment. You will be involved in a wide variety of projects spanning web applications, cloud technologies, APIs, Salesforce integrations, and business-critical systems. You will work closely with developers, designers, and business stakeholders to deliver innovative solutions and exceptional user experiences. We offer the chance to work on a diverse range of exciting digital products and platforms, gain exposure to modern technologies and cloud-based solutions, collaborate with a passionate and supportive team, and enjoy excellent opportunities for professional growth and development.

last updated 38 week of 2026

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